442352147 has 4 divisors (see below), whose sum is σ = 442404816. Its totient is φ = 442299480.

The previous prime is 442352111. The next prime is 442352153. The reversal of 442352147 is 741253244.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 442352147 - 2⁶ = 442352083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442352347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10604 + ... + 31577.

It is an arithmetic number, because the mean of its divisors is an integer number (110601204).

Almost surely, 2^442352147 is an apocalyptic number.

442352147 is a deficient number, since it is larger than the sum of its proper divisors (52669).

442352147 is a wasteful number, since it uses less digits than its factorization.

442352147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52668.

The product of its digits is 26880, while the sum is 32.

The square root of 442352147 is about 21032.1693365188. The cubic root of 442352147 is about 761.9434028869.

The spelling of 442352147 in words is "four hundred forty-two million, three hundred fifty-two thousand, one hundred forty-seven".